AMBIQ MICRO INC (AMBQ)
Institutional ownership reported to the SEC as of Q2 2026, across 4 quarters.
177
Reporting holders
$1.4B
Reported value
64.6%
Of shares outstanding
1.3%
Held as options
+82
Holder change
Institutions report 15,611,964 shares against 24,184,536 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $121.9M | 1,380,623 | 0.00% | 4q | +36.3%+$32.4M |
| D. E. Shaw & Co., Inc. | $86.9M | 983,916 | 0.04% | new | NEW |
| Atreides Management, LP | $77.4M | 877,123 | 0.54% | 4q | +1.7%+$1.3M |
| STATE STREET CORP | $76.1M | 861,979 | 0.00% | 4q | +231.2%+$53.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $67.9M | 768,539 | 0.00% | 2q | +8.6%+$5.4M |
| TWO SIGMA INVESTMENTS, LP | $57.6M | 651,786 | 0.04% | 2q | +1671.4%+$54.3M |
| GOLDMAN SACHS GROUP INC | $39.5M | 446,950 | 0.00% | 4q | +8.1%+$3.0M |
| GEODE CAPITAL MANAGEMENT, LLC | $30.0M | 339,327 | 0.00% | 4q | +14.0%+$3.7M |
| NEEDHAM INVESTMENT MANAGEMENT LLC | $28.6M | 323,700 | 0.86% | 2q | +61.9%+$10.9M |
| JANE STREET GROUP, LLC | $28.3M | 294,802 | 0.00% | new | NEW |
| Schonfeld Strategic Advisors LLC | $27.9M | 315,455 | 0.10% | 4q | -52.0%-$30.1M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $27.3M | 309,096 | 0.18% | 4q | +9.5%+$2.4M |
| MILLENNIUM MANAGEMENT LLC | $25.5M | 289,206 | 0.01% | 3q | +62.9%+$9.9M |
| Driehaus Capital Management LLC | $25.5M | 288,979 | 0.15% | 2q | -24.1%-$8.1M |
| NEUBERGER BERMAN GROUP LLC | $24.0M | 272,126 | 0.02% | new | NEW |
| First Eagle Investment Management, LLC | $21.6M | 244,394 | 0.04% | 4q | -12.4%-$3.1M |
| EMERALD ADVISERS, LLC | $21.5M | 243,664 | 0.51% | new | NEW |
| FRANKLIN RESOURCES INC | $19.8M | 223,763 | 0.00% | 4q | -58.7%-$28.1M |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $19.7M | 223,276 | 0.08% | new | NEW |
| RENAISSANCE TECHNOLOGIES LLC | $19.0M | 214,756 | 0.03% | 2q | +404.1%+$15.2M |
| Walleye Capital LLC | $18.9M | 214,528 | 0.07% | 4q | +1777.0%+$17.9M |
| BNP PARIBAS FINANCIAL MARKETS | $18.0M | 204,181 | 0.01% | 4q | +5150.2%+$17.7M |
| BANK OF AMERICA CORP /DE/ | $17.9M | 203,273 | 0.00% | 4q | +323.2%+$13.7M |
| JPMORGAN CHASE & CO | $17.1M | 200,790 | 0.00% | 4q | +162.4%+$10.6M |
| CITADEL ADVISORS LLC | $17.1M | 122,425 | 0.00% | new | NEW |
| MORGAN STANLEY | $16.1M | 182,007 | 0.00% | 4q | +479.5%+$13.3M |
| ALLIANCEBERNSTEIN L.P. | $15.5M | 609,607 | 0.01% | 4q | -11.1%-$1.9M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $15.0M | 169,890 | 0.00% | 2q | +6.9%+$970.3K |
| WELLINGTON MANAGEMENT GROUP LLP | $14.8M | 168,139 | 0.00% | new | NEW |
| DEUTSCHE BANK AG\ | $14.6M | 165,367 | 0.00% | 4q | +618.7%+$12.6M |
| GILDER GAGNON HOWE & CO LLC | $14.1M | 159,623 | 0.15% | 4q | +45.7%+$4.4M |
| EMERALD MUTUAL FUND ADVISERS TRUST | $14.1M | 159,131 | 0.49% | new | NEW |
| Public Sector Pension Investment Board | $13.3M | 150,400 | 0.02% | new | NEW |
| SOFTBANK GROUP CORP. | $13.2M | 148,939 | 0.07% | 4q | HELD |
| Nuveen, LLC | $12.3M | 138,965 | 0.00% | 2q | +289.0%+$9.1M |
| NORTHERN TRUST CORP | $11.5M | 130,802 | 0.00% | 4q | +18.0%+$1.8M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $11.1M | 126,029 | 0.02% | new | NEW |
| Hood River Capital Management LLC | $10.7M | 121,738 | 0.08% | new | NEW |
| S SQUARED TECHNOLOGY, LLC | $10.7M | 120,773 | 3.31% | 2q | -37.3%-$6.4M |
| MARSHALL WACE, LLP | $9.7M | 109,488 | 0.01% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $9.3M | 7,726 | 0.00% | new | NEW |
| BARCLAYS PLC | $8.8M | 99,686 | 0.00% | 4q | +2007.1%+$8.4M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $8.7M | 98,449 | 0.00% | 4q | +21.4%+$1.5M |
| Sixth Street Partners Management Company, L.P. | $8.7M | 98,449 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $7.3M | 83,127 | 0.00% | 2q | +27.8%+$1.6M |
| WASATCH ADVISORS LP | $7.2M | 81,559 | 0.05% | 4q | -67.9%-$15.3M |
| Moody Aldrich Partners LLC | $7.2M | 81,393 | 1.29% | new | NEW |
| Point72 Asset Management, L.P. | $6.8M | 77,165 | 0.01% | new | NEW |
| Voleon Capital Management LP | $6.7M | 75,980 | 0.12% | new | NEW |
| Ghisallo Capital Management LLC | $6.6M | 75,000 | 0.13% | 4q | +275.0%+$4.9M |
| Trexquant Investment LP | $6.5M | 73,600 | 0.04% | new | NEW |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $5.9M | 66,697 | 0.10% | 4q | -57.1%-$7.8M |
| ALGERT GLOBAL LLC | $5.8M | 66,008 | 0.07% | new | NEW |
| Woodline Partners LP | $5.7M | 64,484 | 0.02% | new | NEW |
| Squarepoint Ops LLC | $5.6M | 63,228 | 0.01% | 2q | +603.5%+$4.8M |
| TITAN GLOBAL CAPITAL MANAGEMENT USA LLC | $5.2M | 59,108 | 0.33% | new | NEW |
| Roubaix Capital, LLC | $4.7M | 53,257 | 1.69% | 2q | -57.7%-$6.4M |
| Informed Momentum Co LLC | $4.5M | 50,968 | 0.40% | new | NEW |
| LMR Partners LLP | $4.4M | 50,000 | 0.02% | new | NEW |
| Burkehill Global Management, LP | $4.4M | 50,000 | 0.16% | new | NEW |
| TUDOR INVESTMENT CORP ET AL | $4.4M | 49,508 | 0.01% | new | NEW |
| Bank of New York Mellon Corp | $4.3M | 48,659 | 0.00% | 4q | +15.8%+$585.3K |
| FMR LLC | $3.9M | 44,634 | 0.00% | 4q | +5749.8%+$3.9M |
| READYSTATE ASSET MANAGEMENT LP | $3.3M | 37,930 | 0.11% | 4q | -9.5%-$352.1K |
| UBS Group AG | $3.2M | 35,786 | 0.00% | 4q | -78.4%-$11.5M |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $3.1M | 35,400 | 0.01% | 3q | -61.8%-$5.0M |
| ELEMENT CAPITAL MANAGEMENT LLC | $3.0M | 34,257 | 0.09% | new | NEW |
| G2 Investment Partners Management LLC | $2.9M | 33,000 | 0.53% | new | NEW |
| SEI INVESTMENTS CO | $2.8M | 31,411 | 0.00% | new | NEW |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $2.7M | 30,196 | 0.01% | new | NEW |
| Numerai GP LLC | $2.1M | 24,192 | 0.17% | new | NEW |
| AMERIPRISE FINANCIAL INC | $2.1M | 23,821 | 0.00% | 4q | -67.6%-$4.4M |
| TD Asset Management Inc | $2.0M | 22,758 | 0.00% | 2q | -4.3%-$89.4K |
| KORNITZER CAPITAL MANAGEMENT INC /KS | $1.9M | 22,023 | 0.04% | 4q | -16.7%-$390.2K |
| RHUMBLINE ADVISERS | $1.9M | 21,856 | 0.00% | 4q | +55.7%+$690.4K |
| HighTower Advisors, LLC | $1.9M | 21,768 | 0.00% | 2q | +0.5%+$10.2K |
| OCCUDO QUANTITATIVE STRATEGIES LP | $1.9M | 21,398 | 0.10% | new | NEW |
| CITIGROUP INC | $1.9M | 21,001 | 0.00% | 4q | +389.1%+$1.5M |
| Toronado Partners, LLC | $1.7M | 19,225 | 4.78% | 2q | -9.4%-$176.3K |
| Capital Asset Advisory Services LLC | $1.7M | 18,928 | 0.06% | 2q | HELD |
| AXXCESS WEALTH MANAGEMENT, LLC | $1.7M | 18,928 | 0.03% | new | NEW |
| GLENMEDE TRUST CO NA | $1.6M | 18,329 | 0.01% | new | NEW |
| WELLS FARGO & COMPANY/MN | $1.5M | 17,012 | 0.00% | 4q | +23.8%+$288.9K |
| XTX Topco Ltd | $1.5M | 16,723 | 0.02% | 2q | -32.7%-$718.0K |
| Quadrature Capital Ltd | $1.5M | 16,432 | 0.01% | 2q | +48.7%+$475.1K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $1.2M | 13,679 | 0.16% | 2q | -28.8%-$488.9K |
| Ilex Capital Partners (UK) LLP | $1.2M | 13,515 | 0.02% | new | NEW |
| Lighthouse Investment Partners, LLC | $1.1M | 12,834 | 0.03% | new | NEW |
| Quantbot Technologies LP | $1.1M | 12,832 | 0.04% | 3q | -15.3%-$205.2K |
| Russell Investments Group, Ltd. | $1.1M | 12,268 | 0.00% | 4q | +763.3%+$957.8K |
| STIFEL FINANCIAL CORP | $1.1M | 12,112 | 0.00% | 2q | -56.3%-$1.4M |
| ENVESTNET ASSET MANAGEMENT INC | $1.0M | 11,532 | 0.00% | new | NEW |
| MetLife Investment Management, LLC | $965.3K | 10,932 | 0.00% | 2q | +7.5%+$67.4K |
| FORA Capital, LLC | $963.2K | 10,902 | 0.07% | new | NEW |
| Quantinno Capital Management LP | $960.5K | 10,878 | 0.00% | new | NEW |
| State of Wyoming | $941.1K | 10,658 | 0.10% | new | NEW |
| AMERICAN CENTURY COMPANIES INC | $938.6K | 10,630 | 0.00% | new | NEW |
| Alyeska Investment Group, L.P. | $912.1K | 10,329 | 0.00% | 4q | -86.8%-$6.0M |
| Invesco Ltd. | $901.1K | 10,205 | 0.00% | new | NEW |
| ProShare Advisors LLC | $814.7K | 9,227 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | T. Rowe Price Investment Management, Inc. | 4.3% |
| 2026-07-27 | 13G | BlackRock, Inc. | 5.3% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 177 | $1.4B | 15,611,964 | 97 | 49 | 30 | 1.3% |
| Q1 2026 | 95 | $250.0M | 9,754,362 | 30 | 48 | 7 | 0.0% |
| Q4 2025 | 72 | $135.4M | 4,749,944 | 15 | 26 | 16 | 0.0% |
| Q3 2025 | 71 | $135.8M | 4,548,365 | 71 | 0 | 0 | 0.0% |